Responded but not answered the question. I've pulled the blocks apart and they're all fine, HOWEVER, they're not EK blocks (which your whole argument is based on).
No, you made the EK comment not me. Seconldy the EK issue had nothing to do with corrosion from the coolant.
I made the comment about how silver is completely uncessary and can only do harm from a corrosion perspective. You may currently be fine, yet we're only taking your word for it, no photos?
I have also backed it up with quite a lot of evidence and counter evidence.
Just because its 'what people do' doesn't make it logical.
Almost all non-ionic coolants are also biocides thus the silver debate is pointless. It can ONLY increase the chance of galvanic corrosion and isn't required for biocidal properties.
But, i think this topic is going off course. Hes looking for info regarding the size of rads required. He can make up his own mind about the rest.